package com.qch.demo_gc;

import java.util.Random;

/**
 * @Author qch
 * @Date 2021/8/19
 */
public class Rand {
    public static void main(String[] args) {
        int m = new Random().nextInt(89)+10;
        long l = System.currentTimeMillis();
        String orderNo="aa"+String.valueOf(l)+String.valueOf(m);
        System.out.println(orderNo);
    }
}
